Regulator and cut-off



(No Model.) 1'

0. S. KING & H. H. SWANEY.

REGULATOR AND GUT-OFF.

Patentqgl Sept. 17, 1889.

l1 IIII'I llll] w/nvmsm: dz jLv I UNITED STATES PATENT OFFICE.

ORLANDO S. KING AND HOMER H. SXVANEY, OF MCKEESPORT, PENNSYLVANIA.

REGULATOR AN D' CUT-OFF.

SPECIFICATION forming part of Letters Patent No. 41 1,041, dated September 17, 1889. Application filed March 15, 1889. Serial No. 303,457. (No model.)

To all whom it may concern:

Be it known that we, ORLANDO S. KING and HOMER H. SWANEY, citizens of the United States, and residing at McKeesport, in the county of Allegheny and State of Pennsylvania, have invented or discovered a certain new and useful Improvement in Regulators and CutOffs, of which the following is a specification.

- The purposes of our invention are to devise an automatic regulator for gas, steam, and water pressure, or similar gases or liquids; also, in combination with the regulator, an automatic cut-off; also, an automatic alarm to indicate when the pressure is entirely re moved.

In the accompanying drawings, which form part of this specification, Figure 1 is a side elevation, partly broken away, of the entire device. Fig. 2 is a longitudinal central section of the valve with the stem raised. Fig. 3 is a corresponding view, partly broken away, of the valve when seated. Fig. 4 is a perspective of the valve-stem, and Fig. 5 a top view of the short crank and showing bellconnection.

The regulator and cut-off is madeas follows:

In Fig. 1,1 is the high-pressure pipe by which the gas or fluid is admitted to the cylinder 2, in which moves the piston 3 onthe piston-rod 4.

5 is a coiled spring of fixed strength secured at one end to the rear of the cylinder and at the other to the piston.

6 6 is a high-pressure main running from the cylinder 2 to a valve 7.

8 isa low-pressure pipe or main.

9 9 is a leakage-pipe running from the extreme rear of the cylinder 2 to the low-pressure pipe or main 8, and is provided with a cheek-valve 10, of ordinary construction, opening toward the low/pressure side or to the right in the drawings.

11 is a connecting-rod, and-12 a short crank moving the valve-stem 13. v

14: is an electrical contact to touch under given conditions a contact-point 15 on the short crank 12.

16 is the connection to the battery 17 from the contact-point 15, and 18 the connection from the contact-point 14 to the bell 19. These latter details are shown more clearly in Fig. 5.

The operation of the regulator and cut-off will now be apparent. The pressure of the liquid, gas, or vapor entering by the pipe 1 will pass down the pipe 6 to the valve 7. Simultaneously the pressure will force back the piston 3 against the tension of the spring 5, (which may be graduated for any particular use.) The piston-rod 4 will be correspondingly driven back, throwing the connectingrod 11 out of line, which will tend to rotate the short crank 12 and turn the valve-stem 13 set therein. Assuming that the guiding-pin 22 is in the groove 21, the valve-stem will be rotated from left to right, sliding downupon the pin and contracting the opening in the valve, allowing less gas to pass through the valve. When the pressure of the gas or liquid and the expansive power of the. compressed spring 5 are equal, the valve-stem 13 will stand still. If the pressure should decline, the spring 5 will expand, tending to straighten the rods 4, 11, and 12 and rotate the stem 13 from right to left, raising the valve and correspondingly enlarging the passage for the gas. Should the pressure entirely die out, the pin 22 will be brought to the bottom of the slot 20, and the spring 23 will force the valve down upon its seat, and the pin 22, sliding up the slot 20, will lock the valve down, effectually preventing any gas or liquid passing into the low-pressure main 8 until the stem 13 is raised by hand and rotated to slide the pin 22 back in place in the groove 21.

This cutoff effected by the slot 20 is peculiarly desirable where the regulator is used in supplying natural gas to dwellings, stores, &c., inasmuch as the fires would be put out by any stoppage of pressure, and if the gas were turned on again and the valve 7 open the building would be filled with an explosive gas. NVhen our invention is used as a gov- ICO ernor or regulator only, as on steanrcngines or on reducing-stations for gas-mains, this slot will be omitted.

\Ve have also shown an electrical alarm, which will give warning of a cessation of pressure. A contact-point 14- is so placed that it will touch the contactpoint 15 only when the levers 1t, 11, and 12 are in a straight line, the position they will assume when the press ure stops. The bell 19, which may be put at any convenient point, is thus rung. This alarm will prove desirable in many places for instance, when used in buildings or at redueing-stationsin the latter case to give an alarm at the central office.

The pipe 9 0 is to draw off any pressure which may generate in the rear of the cylinder 2 from leakage around the piston 23. The eheck-valve 10 will prevent any back-pressure from the main 8. In Fig. 5 the short crank 12 is shown perforated. By pivoting the connecting-rod 11 in different perforations a varying degree of leverage can. be obtained to turn the stem 13. Under circumstances where there is but little friction and wear in the cylinder 2 the leakage-pipe f) 9 may be omitted.

Ilaving fully described our invention, what we desire to claim and secure by Letters Patent is- 1. A combined regulator and cut-oil? consisting of a cylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connecting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem having a spiral and a straight groove cut therein to track a pin set in the valve-shell, a spring in said valve tending to seat it, a high-press1ne pipe leading from the front of the cylinder to the valve,a leakage-pipe having a check-valve leading from the rear of the cylinder to the low-pressure main, and an alarm brought into circuit by the straightening of the connecting-rod and crank when the pressure ccascs, all substantiallyas shown and described.

2. A combined regulator and cutoff consistin g of a cylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connecting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem having a spiral and a straight groove cut therein to track a pin set in the valve-shell, a spring in said valve tending to seat it, a high-pressure pipe leading from the front of the cylinder to the valve, and a leakage-pipe having a check-valve leading from the rear of the cylinder to the low-pressure main, all substantially as shown and described.

3. A combined regulator and cut-oft consistingof acylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a pistona'od, a connecting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem havin a spiral groove cut therein to track a pin set in the valve-shell, a sprin in said valve tending to seat it, a high-pressure pipe leading from the front of the cylinder to the valve, a leakage-pipe having a check-valve leading from the rear of the cylinder to the low-pressure main,and an alarm broughtinto circuit by the straightening of the connecting-rod and crank when the pressure ceases, all substantially as shown and described.

4.. A combined regulator and cut-off consisting of a cylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connecting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valvc-stem having a spiral groove cut therein to track a pin set in the valve-shell, a spring in. said valve tending to seat it, a high-pressure pipe leading from the front of the cylinder to the valve, and a leakage-pipe having a check valve leading from the rear of the cylinder to the low-pressure main, all substantially as shown and described.

5. A combined regulator and cut-oft consistin g of a cylinder to receive the high pressurc, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connccting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem having a spiral and a straight groove out therein to track a pin set in the valve-shell, a spring in said valve tending to seatit, a hi gh-pressure pipe leading from the front of the cylinder to the valve, and an alarm brought into circuit by the straightening of the connecting-rod and crank when the pressure ceases, all substantially as shown and described.

6. A combined regulator and cut-off consist-in g of a cylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connccting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem havin a spiral and a straight groove out therein to track a pin set in the valve-shell, a spring in said valve tending to seat it, and a highpressure pipe leading from. the front of the cylinder to the valve, all substantially as shown and described.

7. A combined regulator and cut-oft consisting of a cylinder to receive the high pressure, a piston with a coiled spring at its back moving in said cylinder, a piston-rod, a connecting-rod pivoted to said piston-rod and to a crank turning a valve-stem, a valve-stem having a spiral groove cut therein to track a pin set in the valvc-shell, a spring in said valve tending to seat it, a high-pressure pipe leading from the front of the cylinder to the valve, and an alarm brought into circuit by the straightening of the connecting-rod and crank when the pressure ceases, all substantially as shown and. described.

8. A combined regulator and cut'ol'f; con- 411,041 g V e sisting of a cylinder to receive the high press- In testimony whereof we have hereunto set ure, a piston with agaoiled spring at its back our hands.

ORLANDO S. KING. HOMER H. SWVANEY.

Witnesses as to Orlando S. King:

JOHN C. THOMPSON, WM. L. PIERCE. Witnesses as to Homer H. Swaney:

CHAS. L. SoHoPP, J. BENDEMAN. 

